golden_test.go: compiler output test is sensitive to protoc and Go version used

[tormoder]

golden_test.go verifies that we don't change the protoc compiler output (using protobuf+grpc+gorums) unintentionally. But the test output is sensitive to the protoc and Go version used. protoc 3.0 and 3.1 have different outputs (a few lines). Go 1.8 changed some compression related stuff that made the gzip output used by protobuf differ.

Option 1: We should somehow don't rely on a specific set of versions for this test.
Option 2: Evaluate the relevance of the test and delete it if it has not proven useful.